期刊
SAE INTERNATIONAL JOURNAL OF ENGINES
卷 8, 期 3, 页码 1098-1106出版社
SAE INT
DOI: 10.4271/2015-01-0887
关键词
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资金
- Borg-Warner
- Chrysler
- Ford Motor Company
- General Motors Company
The impact of the operating strategy on emissions from the first combustion cycle during cranking was studied quantitatively in a production gasoline direct injection engine. A single injection early in the compression cycle after IVC gives the best tradeoff between HC, particulate mass (PM) and number (PN) emissions and net indicated effective pressure (NIMEP). Retarding the spark timing, it does not materially affect the HC emissions, but lowers the PM/PN emissions substantially. Increasing the injection pressure (at constant fuel mass) increases the NIMEP but also the PM/PN emissions.
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